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Manual Section... (8) - page: mkinitramfs

NAME

SYNOPSIS

mkinitramfs
[-dconfdir]
[-k]
[-ooutfile]
[-rroot]
[-v]
[version]

mkinitramfs
[--supported-host-version=hversion]

mkinitramfs
[--supported-target-version=tversion]

DESCRIPTION

The
mkinitramfs
script generates an initramfs image.
The initramfs is a gzipped cpio archive. The archive can be used on a
different box of the same arch with the corresponding Linux kernel.
mkinitramfs
is meant for advanced usage. On your local box
update-initramfs
calls
mkinitramfs
with the relevant parameters.
update-initramfs
keeps sha1sum of generated initramfs. It takes care to generate backups
and eventually runs the bootloader.

At boot time, the kernel unpacks that archive into RAM disk, mounts and
uses it as initial root file system. All finding of the root device
happens in this early userspace.

OPTIONS

-d confdir

Set an alternate configuration directory.

-k

Keep the temporary directory used to make the image.

-o

outfile

Write the image to
outfile

.

-r root

Override the

ROOT
setting in
initramfs.conf.

-v

Set the verbose mode output.

version

Set the kernel version of the initramfs image
(defaults to the running kernel).

--supported-host-version=hversion

This option queries if mkinitramfs can create ramdisks on a running kernel of version
hversion

.

--supported-target-version=tversion

This option queries if mkinitramfs can create ramdisks for kernel version
tversion

.

FILES

/etc/initramfs-tools/initramfs.conf

The default configuration file for the script. See
initramfs.conf(5)
for a description of the available configuration parameter.

/etc/initramfs-tools/modules

Specified modules will be put in the generated image and loaded when the system boots. The format - one per line - is identical to that of
/etc/modules,
which is described in
modules(5).

/etc/initramfs-tools/conf.d

The conf.d directory allows to hardcode bootargs at initramfs build time
via config snippets. This allows to set ROOT or RESUME.
This is especially useful for bootloaders, which do not pass an root bootarg.

/etc/initramfs-tools/DSDT.aml

If this file exists, it will be appended to the initramfs in a way that causes
it to be loaded by ACPI.